[MMORPG Game Development with C++ and Unreal Engine Series] Part 3: Data Structures and Algorithms
This course explores the essential RPG game feature of "pathfinding" while naturally teaching data structures and algorithms. It quickly covers common technical interview questions, allowing you to prepare for coding interviews in a short period.

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Hello! This is Rookiss.
https://inf.run/ePxdM
[Lightning Live] Rookiss's Pinpoint Lesson: Regarding the AI Omakase Study Challenge Pilot LectureSchedule: 2026/05/24 (Sunday 8 PM - 10 PM)
Cost: Free
Topic: May Challenge Pilot Lecture
These days, as society is quite unsettled due to AI,
our team is also moving busily to find new curriculums and directions.The new challenge we are launching this time
features unconventional pricing + recruiting a large number of people to lead them in the long term,
and is being planned as a long-term challenge to support entrepreneurship/employment/growth in the AI era.
The most important aspect of the challenge is the harmony between [Main Weapon] AI + [Sub Weapon] Domain, but
since there still seem to be more cases than expected where it is misunderstood as a game development challenge,
after much consideration, we have decided to conduct only the first day's lecture as an open lecture (Lightning Live)
so that everyone can experience the method and direction of the lecture.
Only the first day's lecture on Sunday will be held in (Lightning Live) full public mode,
and Day 2 will begin on Monday, at which point the live session will take place within the main course.========================
In this session,
- [TERRAN] Claude Code x Web Server/Network (Naturally learning through asynchronous online game production)
- [TERRAN] Claude Code x Python (Python Reading Speedrun and Product Creation)

I am considering a combination of the two.
Even if it gets tedious in the long run, I plan to include AI studies in the curriculum,
and the starting point for that will be an introduction to Python.Challenge Link https://inf.run/473or
Participation Fee: 49,500 KRW
Schedule: 2026/05/24 ~ 2026/06/20
Live Schedule: Mon, Tue, Wed, Thu, Fri, Sat (1-2 hours at 8 PM) conducted according to the schedule announcement. At least 20 hours or more per month.
Goal: Establish a study routine, build up your strength with a long-term perspective of 2-3 years to prepare for the era of Physical AI.
Fields: Zerg (LLM and AI Core), Terran (AI Application / Entrepreneurship), Protoss (UE5) related
Topics: Select and proceed with 2 topics each month. If a topic is finished early, proceed to the next lecture (Active)
A world where employment is no longer guaranteed.
No matter what you study, there is also no guarantee that you can outrun the pursuit of AI.
We need the wisdom to study a wide range of fields while constantly looking for opportunities.
At the same time, we must not drift away from the great wave that is AI.
The theory sounds plausible, but today's survival is the immediate problem—so what should we do?Experienced newcomers might have some savings, but
new graduates and job seekers lack even the smallest safety net.
Even if they work part-time jobs to survive, their bank accounts quickly empty out due to housing and food costs,
making it inevitable that studying for the future and basic survival drift further apart.In response to this reality, Rookiss is shifting the direction of the challenge.
We will take the lead in sharing people's burdens.
By operating the challenge unconventionally with minimal costs,
we intend to cover the losses later through government funding.In 2-3 years, the main force of the AI invasion, Physical AI, will be approaching.
If we don't prepare in advance, the gap will only widen further,
and after that, there won't even be an opportunity for a reversal.
We will soon begin long-term intensive training to prepare for the AI era.https://inf.run/xnBd9
Live Guerrilla Seminar
Date: 2026/05/19 (Tuesday)
Topic: How to prepare for the future of the AI era, which will become even gloomier at a time when employment is difficult
Since the last seminar, "that" question coming from many people remains unchanged.
But what should I do when I can't get a job?
Starting a business isn't the answer for my personality, so what other alternatives are there?
But there's no support and I don't have the strength to endure the present, so what should I do then?If you are used to an environment where there are always formulas and correct answers,
you may not be accustomed to finding new paths.
For those individuals, I am holding a guerrilla seminar to further explain the solutions I have in mind.
The general contents are as follows.Future direction and predictions from the perspective of running an education company
So, what should people do? (Proposing a formula in if - else if - else mode)
Second half challenge and government-funded program schedule
Others:
The previously announced challenge recruitment has been canceled, and a re-recruitment with a more unconventional format is scheduled.
Related details will be shared during the live session.The third quarter of 2026 will be conducted under the theme of [100% AI-based Game Development].
Looking around, games still seem to be the most accessible domain.
In line with the trends of the times, we will research how to release games on itch.io and Steam using 100% AI,
while quickly filling in server knowledge to ensure there are technical takeaways.
We are aiming for a [Royal Roader] path that goes from Single-player -> Asynchronous -> MMO in a three-part series without any prior knowledge.
Although this course is fundamentally designed as an online lecture,
we will also conduct Challenge Lives to point out key highlights in real-time every week.
Course Enrollment Link
https://inf.run/1d4iF
Course-related Seminar Link:
https://inf.run/qzZjv
Challenge Summary:
This is the EARLY ACCESS version of the course being produced as an online lecture.
- Recordings of the Challenge Lives will also be provided.
- These will also be added to the online course by default.
Challenge Live Sessions:
Live sessions will be held for 2 hours every Sunday for 4 weeks,
briefing the overall summary and direction of the content.
Capacity: 100 people
Live Schedule:
At least 4 weeks (Every Sunday 8pm~10pm)
Since the live sessions continue until the course is completed, the schedule may be extended by 1-2 weeks depending on progress.
The second lecture in Rookiss's Pinpoint Lesson series is
[HTML/JS-based 2D/3D Game Development].Would you believe it if I told you all of this was made with AI?
In fact, all the game art was created in just 30 minutes using AI with refined prompts.
No one may have noticed yet, but the era of the 1-person indie game developer, who utilizes AI for everything from planning and art to programming,
has truly x100 arrived.
If this level is possible even now, aren't you excited for what's coming in 1 or 2 years?
Let's start practicing the 100% AI development routine now,
and wait for the upcoming changes in Unity/Unreal AI.
The core of an agent is the LLM, and the LLM's native language is text.
We naturally used Unity and Unreal for game development,
but in a way, the web environment, where everything is controlled by text, is the agent's home ground.
In fact, if you're prototyping or aiming for solo game development,
an environment where 100% of the process can be controlled by AI is the best.
HTML/JS-based games might seem to lack depth,
but with the emergence of Three.js and WebGL, we can now utilize GPUs even in a web environment.
Therefore, the rendering knowledge you've been studying is now a subject that can be applied identically to the web.
Furthermore, did you know that the famous [Vampire Survivors]
initially started on itch.io as a JS-based game?
Now our strategy is clear.
- Come up with an idea and quickly create a prototype.
- Release it on itch.io.
- If the response is good, put in more effort and release it on Steam.
Let's refine this pipeline and conquer the new domain of games.By the end of the year, I am planning a three-part series for Rookiss's Pinpoint Lesson - Claude Code x Games.
- Part 1. (100% AI + HTML/JS + 2D/3D Game Development) << Current Lecture
Planning Intent: Domain knowledge for releasing single-player games on itch.io with just an AI click
Prerequisites: None
Planned Content:Single game prototyping using Claude code (2D/3D game development)
Understanding of web apps/local apps (inherent limitations of the web, etc.)
Web technologies (Canvas, SVG, 3D, ...)
Understanding of 2D/3D games
Basic rendering knowledge and optimization
Understanding of game engines and building a custom engine
Refining art styles and managing assets through operational tools
itch.io Launch and Monetization
- Part 2.(100% AI + Asynchronous Online Game/Network)
Planning Intent: Server/network domain knowledge for launching asynchronous online games with AI assistance
Prerequisites: Basic knowledge of game development covered in Part 1
Content under consideration:Game prototyping & server integration using Claude code
Utilization of Web Servers/WebSockets, Distribution Design
Database
Network Theory
Security and Certificates
Cloud Operations
Serverless Architecture
Creating an Admin Management Tool (Mockup of a backend server using AI)
- Part 3.(100% AI + Seamless MMORPG)
Planning Intent: It's finally here! Challenging the Seamless MMO without zones
Prerequisites: Basic knowledge of game development from Part 1 + Network/Web knowledge covered in Part 2
Contents under consideration:MMORPG using Claude code
Operating System and Thread Theory
Creating your own C# server engine using AI assistance
Area Partitioning and AOI Processing Techniques
Advanced MMO methodologies such as the Actor model and Ghost Zones
Server topology design, considerations on RvR, etc.
Creation of operation tools
Released a solo-developed MMORPG on itch.io / Steam.
Thank you!
https://inf.run/qzZjv
Hello!
Following requests from several people,
I have opened the recording of yesterday's live seminar as a free online course.
Title:
[Rookiss Live Seminar] Claude Code x Games - Introduction to Solo Entrepreneurship Fields Worth Challenging Using AI
Table of Contents:
Part-1. Study Direction
Part-2. Game Domain
Part-3. AI-Based Game DevelopmentThank you!
https://inf.run/oysj9
Schedule: May 10th (Sunday) 8pm - 10pm
Location: Inflearn Live
Topic: Claude Code x Games - Introducing solo entrepreneurship fields worth challenging using AI
The live session will mainly cover the following:
- Game industry trends (Unreal MMO related cases)
- Indie game strategies using AI and art generation
- Introduction to various directions and difficulty levels accessible through server utilizationPlease refer to the details below.
=============================================
The second lecture in Rookiss's Pinpoint Lesson series is
[Server and Network Knowledge Naturally Learned Through Online Game Development].
The reason I chose this topic is...
First, I'll give you a spoiler with a game development project I've been testing recently.

Would you believe it if I told you all of this was created by AI?
In fact, all the game art was produced in just 30 minutes using refined prompt-based AI.
Although no one may have noticed yet, the era of the 1-person indie game developer,
who utilizes AI for everything from planning and art to programming, has truly x100 arrived.
If this level is possible now, aren't you even more excited for what's coming in 1 or 2 years?
It's becoming a very exciting time, as the art that used to trouble us so much is finally being solved.
But then, how should one go about making a game fun?
Of course, those with overflowing ideas can take on the challenge of a single-player game.
However, in terms of game success, single-player games can actually be more difficult than multiplayer games in some aspects.
While single-player games must have perfect balance and content creation to provide fun,
multiplayer games allow people to create content themselves,
meaning that if you nail the concept, the planning can actually be much easier.
Of course, the technical difficulty increases conversely, but even that is being significantly mitigated thanks to AI.
Ultimately, in a roundabout and unintended way, the value of the server becomes even higher.
Even if you don't necessarily have an interest in games,
the first place you'll hit a wall when developing using agents is the part related to 'servers and networks'.
What should you do if you want the app you worked so hard on to be used by your entire company or your friends?
Using deployment apps like Vercel with your eyes closed might work for the moment,
but as soon as the product becomes even slightly complex, that too is only a temporary fix.
Surprisingly, from this point on, a broad range of knowledge is required, including web servers, real-time servers, databases, cloud, and networks.In [AI Core Essentials! Rookiss's Pinpoint Lesson], we have determined that the value of such server/network knowledge is
second only to Claude Code.
Therefore, we have selected [Server/Network Knowledge Naturally Learned Through Online Game Development] as our second topic.
From the concepts of Web Server / WebSocket / SSE / Real-time Server / Serialization,
to the ability to see the big picture through learning network knowledge,
we will wrap things up by seasoning it with a bit of security knowledge.
Ultimately, the goal is to create and operate a simple server with the help of AI.
Recording for this topic is scheduled to begin in the second week of May (once the Claude Code lectures are finalized).
While it will ultimately be released as an online course,
we will also run a challenge during the production process to provide live briefings and share directions on weekends.
We plan to provide the online course to challenge participants as well, giving it an "EARLY ACCESS" feel.
Recruitment for the challenge will begin this week, and a detailed announcement will follow.
A Live Seminar will likely be held over the weekend to provide further details.(The following topic will be a Seamless MMORPG project for game developers.)(And I am also considering an art production pipeline utilizing 100% AI as a future topic.)Thank you!
Hello, this is Rookiss.
I have some news regarding the second-half-of-the-year series.
=================================
[First News] Introduction to Rookiss's Pinpoint Lesson
[Hitting the Core of AI! Rookiss's Pinpoint Lesson] Series Introduction
As the AI era approaches, unprecedented changes are underway.
Many people are struggling to move forward in this chaotic society,
but people often fail to realize that the way we learn has also changed significantly in the AI era.
The "10,000-Hour Rule" for becoming an expert has become a relic of the past.
Even if a person invests 10,000 hours, from an AI's perspective, they look like a cute beginner rather than an expert.
It has now become more advantageous for humans to know as many fields as possible as broadly as possible.
However, universities still conduct classes slowly using 1,000-page textbooks,
and academies still teach by having students type out code line by line.
That's why I prepared the [Rookiss's Pinpoint Lesson] series.
While covering a wide and diverse range of topics, the goal is to always move in a direction that is friendly to AI learning.
While striving to understand important parts persistently,
the overall volume is compressed to avoid unnecessary repetitive typing.
If you can accumulate more knowledge through one hour of content in a Pinpoint Lesson
more efficiently than 10 hours of self-study,
[Rookiss's Pinpoint Lesson] transcends from selling knowledge to selling time.
==================================================================
[Second News] Regarding the opening of a new course (KDC)
[KDC] Pinpointing the Core of AI! Rookiss's Pinpoint Lesson - Introduction to Claude Codehttps://inf.run/Bemyc
The first lecture of the series is Claude Code, which is now an introductory topic for everyone.
- [1] Unlike other lectures, it does not focus solely on coding.
- [2] It focuses on the core nature of agents and Claude Code.
- [3] It is structured to make learning easy by utilizing self-produced teaching materials.
Since this lecture was planned with the goal of being part of the KDC government-funded program in the second half of the year, (assuming it passes the government evaluation successfully)
it is expected to be available for a self-payment of around 20,000 to 30,000 KRW by September or October.
=================================[Third News] Regarding the next topic
And finally, the main news that marks today's highlight.
The second lecture in Rookiss's Pinpoint Lesson series is
[Server and Network Knowledge Naturally Learned Through Online Game Development].
The reason I chose this topic is...
First, I'll give you a spoiler with a game development project I've been testing recently.



Would you believe it if I told you all of this was created by AI?
In fact, the game art was all produced in just 30 minutes using refined prompt-based AI clicks.
No one may have noticed yet, but the era of the
solo indie game developer, utilizing AI for planning, art, and programming, has truly x100 arrived.
It is becoming a very exciting time, as the art that used to trouble us so much is finally being resolved.
But how do you go about making a game fun?
Of course, those with overflowing ideas can challenge themselves with single-player games.
However, in terms of game success, single-player games can actually be more difficult than multiplayer games in some aspects.
While single-player games must have perfect balance and content creation to provide fun,
multiplayer games allow people to create content on their own,
so if you get the concept right, the planning aspect can actually be much easier.
Conversely, the technical difficulty increases, but even that is being significantly mitigated thanks to AI.
Ultimately, in a roundabout and unintended way, the value of the server becomes even higher.
Of course, even if you have no interest in games,
the first part where you get stuck while developing using agents is the 'server and network' related section.
What should you do if you want the app you worked hard on to be used by your entire company or your friends?
It might work for now if you blindly use a deployment app like Vercel,
but as soon as the product becomes even slightly complex, this is merely a temporary fix.
Surprisingly, from this point on, a wide range of knowledge is required, including web servers, real-time servers, databases, cloud, and networks.In [AI Core Essentials! Rookiss's Pinpoint Lesson], we have determined that the value of such server/network knowledge is
the next most important thing after Claude Code,
and have selected [Server/Network Knowledge Naturally Learned Through Online Game Development] as the second topic.
From the concepts of Web Server / WebSocket / SSE / Real-time Server / Serialization,
to the ability to see the big picture through learning network knowledge.
And we will wrap it up by adding a dash of security knowledge.
Ultimately, the goal is to create and operate a simple server with the help of AI.
Recording for this topic is scheduled to begin in the second week of May (once the Claude Code lectures are finalized),
and while it will ultimately be released as an online course,
we plan to run a challenge in parallel during the production process to provide live content briefings & direction sharing on weekends.
We intend to provide the online course to challenge participants as well, giving it an "Early Access" feel.
Recruitment for the challenge will begin this week, and I will provide a detailed announcement again.
A Live Seminar will likely be held over the weekend to explain the details.(It's a secret, but the next topic will be a Seamless MMORPG project for game developers.)(And I am also considering an art production pipeline utilizing 100% AI as a future topic.)(Và tôi cũng đang cân nhắc chủ đề về quy trình sản xuất Art sử dụng 100% AI trong tương lai)Thank you!
Hello, this is Rookiss.
Since several people requested a recording, I have opened the contents of yesterday's
[Rookiss Live Seminar] Survival Strategies in the AI Era - Physical AI and Future Job Responses
as a new free course.
https://inf.run/ZUxdk
Please refer to it as it covers important points I've felt about the current era.Thank you!

